{"product_id":"industrial-modbus-rtu-8-ch-relay-module-e-with-rs485-interface-30a-high-current-multi-isolation-protection-circuits-rail-mounted-case","title":"Industrial Modbus RTU 8-ch Relay Module (E) with RS485 Interface, 30A High Current, Multi Isolation Protection Circuits, Rail-mounted Case","description":"\u003cdiv class=\"overviewSec\"\u003eIndustrial Modbus RTU 8-ch Relay Module (E) with RS485 Interface, 30A High Current, Multi Isolation Protection Circuits, Onboard Optocoupler Isolation, Built-in Flyback Diode Protection, Rail-mounted Case\u003c\/div\u003e\u003cdiv class=\"richWrap\"\u003e\u003cdiv class=\"pdT\" style=\"background: #000000; color: #ffffff;\"\u003e\u003cdiv class=\"richTitle\"\u003eRS485 8-ch High Current Relay Module\u003c\/div\u003e\u003cdiv\u003e\u003c\/div\u003e\u003cp class=\"richDesc hilitBlock2 round1234\" style=\"background: #65c732; color: #FFFFFF;\"\u003eModbus RTU Protocol, Multi Isolation Protection Circuits, Safe \u0026 Stable \u0026 Reliable\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-1.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), front view\"  \/\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #1e1c27; color: #ffffff;\"\u003e\u003cdiv class=\"richTitle\"\u003eFeatures At A Glance\u003c\/div\u003e\u003cp class=\"alignl pdTRBL\"\u003e     This is an industrial 8-ch relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetical isolation, resettable fuse, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (E) is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and\/or applications with high communication requirement.\u003c\/p\u003e\u003cul class=\"alignl pdTRBL2\" style=\"color: #ffffff;\"\u003e\u003cli\u003eConfigurable device address (1~255), multi devices can be cascaded on RS485 bus\u003c\/li\u003e\u003cli\u003eFeatures flash-on, flash-off function, by passing arguments to the command, it is possible to turn on the relay for a while and then close it automatically\u003c\/li\u003e\u003cli\u003eOnboard voltage regulator, supports 7V~36V wide voltage supply\u003c\/li\u003e\u003cli\u003eOnboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal\u003c\/li\u003e\u003cli\u003eOnboard unibody ADI magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption\u003c\/li\u003e\u003cli\u003eOnboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current\/over-voltage proof, lightningproof \u0026amp; anti-electrostatic\u003c\/li\u003e\u003cli\u003eOnboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit\u003c\/li\u003e\u003cli\u003eAdopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability\u003c\/li\u003e\u003cli\u003eReverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection\u003c\/li\u003e\u003cli\u003eHigh quality relay, contact rating: ≤30A 250V AC or ≤30A 28V DC\u003c\/li\u003e\u003cli\u003eRail-mounted ABS plastic enclosure, easy to install, safe to use\u003c\/li\u003e\u003cli\u003e3 LEDs for indicating the MCU status and signal transceiving status\u003c\/li\u003e\u003c\/ul\u003e\u003cdiv\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eSpecifications\u003c\/div\u003e\u003ctable class=\"tabSty-2 mgnTB alignc\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth\u003ePower supply\u003c\/th\u003e\u003ctd\u003e7~36V\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eCommunication interface\u003c\/th\u003e\u003ctd\u003eRS485\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eBaudrate\u003c\/th\u003e\u003ctd\u003e4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eDefault communication format\u003c\/th\u003e\u003ctd\u003e9600, N, 8, 1\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRelay channels\u003c\/th\u003e\u003ctd\u003e8\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eContact form\u003c\/th\u003e\u003ctd\u003e1NO 1NC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003econtact rating\u003c\/th\u003e\u003ctd\u003e≤30A 250V AC or ≤30A 28V DC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eCommunication protocol\u003c\/th\u003e\u003ctd\u003eStandard Modbus RTU protocol\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eRS485 address\u003c\/th\u003e\u003ctd\u003e1~255\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003cth\u003eLED indicators\u003c\/th\u003e\u003ctd\u003eSTA: MCU indicator, keeps flashing when the MCU is normally workingTXD: TX indicator, lights up when sending dataRXD: RX indicator, lights up when receiving data\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eHigh Current Screw Terminals\u003c\/div\u003e\u003cp class=\"richDesc\"\u003e30A high current relay, Onboard high quality screw terminals with covers, more convenient for high current wiring\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-5.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), onboard high quality screw terminal\"  \/\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eHardware Analysis\u003c\/div\u003e\u003cp class=\"richDesc\"\u003eMultiple protections for safer and more reliable use\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-7.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), onboard components\"  \/\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eInterfaces \u0026amp; Indicators\u003c\/div\u003e\u003cp class=\"richDesc\"\u003eWith Multiple LED Indicators, Easy To Monitor The Operating Status\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-3.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), onboard multiple LED indicators\"  \/\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #f5f5f5;\"\u003e\u003cdiv class=\"richTitle\"\u003eEnclosure Design\u003c\/div\u003e\u003cp class=\"richDesc\"\u003eRail-mounted ABS plastic enclosure, easy to install, safe to use\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-9.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), with ABS plastic enclosure\"  \/\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #f5f5f5;\"\u003e\u003cdiv class=\"richTitle\"\u003eRS485 Communication\u003c\/div\u003e\u003cp class=\"richDesc\"\u003eConfigurable device address (1~255), multi devices can be cascaded on RS485 bus\u003c\/p\u003e\u003cp class=\"richDesc subBlock\"\u003eIn case of many devices are cascaded, or communication distance is quite long, it is necessary to use RS485 repeaters\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-11.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), RS485 communication connection\"  \/\u003e\u003cp class=\"note\"\u003efor reference only, the \u003ca href=\"https:\/\/www.waveshare.com\/usb-to-rs232-485-ttl.htm\"\u003eUSB TO RS232\/485\/TTL\u003c\/a\u003e converter is Not included\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #f5f5f5;\"\u003e\u003cdiv class=\"richTitle\"\u003eRelay connection\u003c\/div\u003e\u003cp class=\"richDesc\"\u003eContact rating of the onboard relay up to 30A 250V AC or 30A 28V DC\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-13.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), connection examples with load\"  \/\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #f5f5f5;\"\u003e\u003cdiv class=\"richTitle\"\u003eApplications\u003c\/div\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-15.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), applications\"  \/\u003e\u003c\/div\u003e\u003cdiv class=\"pdT\" style=\"background: #f5f5f5;\"\u003e\u003cdiv class=\"richTitle\"\u003eProduct show\u003c\/div\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-17.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), product show\"  \/\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eOutline dimensions\u003c\/div\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-size.jpg\"  alt=\"Industrial Modbus RTU 8-ch Relay Module (E), outline dimensions\"  \/\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eResources \u0026amp; Services\u003c\/div\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/LCD\/common\/res_banner.png\" \/\u003e\u003cdiv class=\"bgGrey\"\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/LCD\/common\/res_content.png\" \/\u003e\u003chr\u003e\u003cdiv\u003e\u003cstrong\u003eWIKI:\u003c\/strong\u003e\u003ca href=\"http:\/\/www.waveshare.com\/wiki\/Modbus_RTU_Relay_(E)\" target=\"_blank\"\u003ewww.waveshare.com\/wiki\/Modbus_RTU_Relay_(E)\u003c\/a\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cp class=\"subBlock alignl\"\u003e* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cdiv class=\"richTitle\"\u003eSelection Guide\u003c\/div\u003e\u003ctable class=\"tabSty-2 mgnTB alignc\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003cth style=\"width: 25%;\"\u003eproduct\u003c\/th\u003e\u003cth\u003eCommunication parameters\u003c\/th\u003e\u003cth\u003eRelay type\u003c\/th\u003e\u003cth\u003eOutput control\u003c\/th\u003e\u003cth\u003eInput control\u003c\/th\u003e\u003cth\u003ePower range\u003c\/th\u003e\u003cth\u003eDimensions\u003c\/th\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay.htm\" target=\"_blank\"\u003eModbus RTU Relay\u003c\/a\u003e\u003c\/td\u003e\u003ctd rowspan=\"8\"\u003eRS485 port\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e5V\u003c\/td\u003e\u003ctd\u003e145×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay-b.htm\" target=\"_blank\"\u003eModbus RTU Relay (B)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e175×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay-c.htm\" target=\"_blank\"\u003eModbus RTU Relay (C)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Latching Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e145×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay-d.htm\" target=\"_blank\"\u003eModbus RTU Relay (D)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e175×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay-e.htm\" target=\"_blank\"\u003eModbus RTU Relay (E)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e30A High Current Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e200×110×60mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-RTU-Relay-4CH.htm\" target=\"_blank\"\u003eModbus RTU Relay 4CH\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e30A High Current Relay\u003c\/td\u003e\u003ctd\u003e4-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e145×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/modbus-rtu-relay-16ch.htm\" target=\"_blank\"\u003eModbus RTU Relay 16CH\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e16-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e5V\u003c\/td\u003e\u003ctd\u003e200×110×60mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-RTU-Relay-32CH.htm\" target=\"_blank\"\u003eModbus RTU Relay 32CH\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e32-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e300×110×60mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-POE-ETH-Relay.htm\" target=\"_blank\"\u003eModbus POE ETH Relay\u003c\/a\u003e\u003c\/td\u003e\u003ctd rowspan=\"2\"\u003eEthernet port (PoE support)\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e145×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-POE-ETH-Relay-B.htm\" target=\"_blank\"\u003eModbus POE ETH Relay (B)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e175×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-POE-ETH-Relay-C.htm\" target=\"_blank\"\u003eModbus POE ETH Relay (C)\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003eDual Ethernet ports (PoE support)\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e8-ch\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e175×90×40mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-POE-ETH-Relay-16CH.htm\" target=\"_blank\"\u003eModbus POE ETH Relay 16CH\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003eDual Ethernet ports (PoE support)\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e16-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e200×110×60mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e\u003ca href=\"https:\/\/www.waveshare.com\/Modbus-POE-ETH-Relay-30CH.htm\" target=\"_blank\"\u003eModbus POE ETH Relay 30CH\u003c\/a\u003e\u003c\/td\u003e\u003ctd\u003eEthernet port (PoE support)\u003c\/td\u003e\u003ctd\u003e10A Universal Relay\u003c\/td\u003e\u003ctd\u003e30-ch\u003c\/td\u003e\u003ctd\u003e-\u003c\/td\u003e\u003ctd\u003e7V~36V\u003c\/td\u003e\u003ctd\u003e300×110×60mm\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003c\/div\u003e\u003ch2\u003eLieferumfang\u003c\/h2\u003e\u003cdiv class=\"msg msg_info\"\u003e\u003cul\u003e\u003cli\u003eThe power supply of this product is not included, it is recommended to purchase \u003ca href=\"https:\/\/www.waveshare.com\/ord-psu-12v2a-5.5-2.1.htm\" target=\"_blank\"\u003e12V power supply\u003c\/a\u003e if you need it.\u003c\/li\u003e\u003cli\u003eIt is also recommended to purchase \u003ca href=\"https:\/\/www.waveshare.com\/usb-to-rs232-485-ttl.htm\"\u003eUSB TO RS232\/485\/TTL\u003c\/a\u003eor\u003ca href=\"https:\/\/www.waveshare.com\/usb-to-rs485.htm\"\u003eUSB TO RS485\u003c\/a\u003e at the same time for easy testing.\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003cp\u003eModbus RTU Relay (E) x1\u003c\/p\u003e\u003cimg src=\"https:\/\/www.waveshare.com\/img\/devkit\/accBoard\/Modbus-RTU-Relay-E\/Modbus-RTU-Relay-E-details-pack.jpg\"  alt=\"Modbus RTU Relay (E)\"  \/\u003e","brand":"WaveShare","offers":[{"title":"Default Title","offer_id":53568514785617,"sku":"WSAL30459","price":23474.58,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/3798\/0753\/files\/wsal304591-471075.jpg?v=1776683981","url":"https:\/\/albistech.eu\/de\/products\/industrial-modbus-rtu-8-ch-relay-module-e-with-rs485-interface-30a-high-current-multi-isolation-protection-circuits-rail-mounted-case","provider":"Albistech","version":"1.0","type":"link"}